Why would you pay to take your dog to a training class and NOT listen to the trainers instructions? If a trainer is telling you that you need private lessons for your crazy *** dog, I'd listen. When the trainer tells you to keep your dog in a specific area to avoid confrontation with other dogs, PLEASE DO SO!!! Your dog has lunged and/or snapped at all the dogs in class, while you were dithering around. Stop! Focus on your dog!!! Hold on to his leash so he can't get to the other dogs, and for all that is furry and fun, don't start walking up to people to have conversations while your dog is snapping and lunging at the end of the leash!